Intake plenum and 911 throttle body

[Ben006]

If you use a 15 degree 3" tube, you need a slightly less than 90 degree coupler for the TB.
A 90degree coupler cut slightly shorter works fine.
I'll post pictures tonight!

Gelbster, you mean an air filter where the snorkle is usually ?

[Gelbster]

Originally Posted by Ben006

Gelbster, you mean an air filter where the snorkle is usually ?

Yes Ben,
I cobbled together an experimental air filter from "UNI" foam and fitted it in the 'tunnel' where the snorkel usually is.It fits behind and is attached to the louvers.One screw and it all slides out.
The use of the tunnel as an air filter housing enables a very compact new arrangement in the engine bay where the old airbox was. Access to the Bank 2 - 4,5,6 inlet manifold area is now excellent from above.
The concept needs proving. And improving. I am (wildly)guessing that I have an acceptable compromise of filtration vs. obstruction.
I also fitted a finer mesh screen(like the997 has) .I also fitted an airflow straightener before the MAF. Who knows if .....
The project was not planed.I had to r&r # 4 injector and the fuel pressure regulator. Try that with the engine and airbox in place and you'll understand.
I am not advocating this as an effective project because I do not have test data.

[Ben006]

Originally Posted by Gelbster

Yes Ben,
I cobbled together an experimental air filter from "UNI" foam and fitted it in the 'tunnel' where the snorkel usually is.It fits behind and is attached to the louvers.One screw and it all slides out.
The use of the tunnel as an air filter housing enables a very compact new arrangement in the engine bay where the old airbox was. Access to the Bank 2 - 4,5,6 inlet manifold area is now excellent from above.
The concept needs proving. And improving. I am (wildly)guessing that I have an acceptable compromise of filtration vs. obstruction.
I also fitted a finer mesh screen(like the997 has) .I also fitted an airflow straightener before the MAF. Who knows if .....
The project was not planed.I had to r&r # 4 injector and the fuel pressure regulator. Try that with the engine and airbox in place and you'll understand.
I am not advocating this as an effective project because I do not have test data.

I'll take a look at the possibilities when I have the time



The first sold plenum is ready !




You'll notice the four ribs added. Just for security and further stiffening!
You'll also notice that my masking tape game is not the best one yet... ^^

I ordered a 996 plenum too.
I have a GT3 throttle body at home and a guinea pig who's willing to test it on his 996

Ben